Air bag brake mechanism

Abstract

The invention discloses an air bag brake mechanism, and particularly relates to furniture, tables and chairs and other related technical fields, the air bag brake mechanism comprises an auxiliary brake mechanism, the auxiliary brake mechanism comprises an upper fixing plate, a lower fixing plate, a brake plate, a brake connecting shaft, a connecting bolt and a wheelchair structure, the bottom of the upper fixing plate is provided with a plurality of sets of supporting columns, and the supporting columns are sleeved with movable plates; a locking bolt is arranged at the top of each supporting column; wherein the upper fixing plate and the lower fixing plate are connected through the supporting columns and the locking bolts to form a fixed cage body; the auxiliary braking mechanism is arranged, the manual inflation bag designed according to the human engineering principle is innovatively adopted in the auxiliary braking mechanism, and a user can easily achieve braking and braking releasing of the table and the chair only through the simple action of manual squeezing and releasing; according to the auxiliary braking mechanism, a user does not need to stoop to operate and only needs to naturally carry out simple hand actions by hands beside a table and a chair, and the operation process is greatly simplified through the design.

Description

Technical Field

[0001] The present invention relates to the fields of furniture, tables and chairs and other related technical fields, and more particularly, to an airbag brake mechanism. Background Art

[0002] Furniture tables and chairs, as indispensable items in human life, play an important role in various places; whether in the family dining room, study, school classroom, or office conference room and office, tables and chairs are the basic support for people to dine, study, work and other activities; their design must not only meet the basic load-bearing and comfort requirements, but also take into account the convenience of use in different scenarios.

[0003] Since tables and chairs are relatively heavy, frequent movement will consume a lot of physical strength and may even cause wear and tear on the ground. To solve this problem, traditional table and chair designs usually install rolling casters on the legs for easy mobility; the introduction of casters has indeed significantly improved the maneuverability of tables and chairs, especially in places where the layout needs to be frequently adjusted, such as conference rooms, classrooms or activity spaces, casters make rearranging tables and chairs easy and quick; however, when tables and chairs do not need to be moved, due to the rolling characteristics of the casters, the tables and chairs may often move their position on their own, causing inconvenience to users.

[0004] At present, traditional table and chair designs generally adopt the method of adding brake functions to casters to solve the contradiction between mobility and fixation. However, when users sit on the chair, due to the distribution of body weight and the limitation of chair height, it is often difficult to bend down to operate the brake device on the caster. This is especially difficult for the elderly or people with limited mobility. This further increases the safety risk and is inconvenient for users to operate. To this end, we propose an airbag brake mechanism. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an airbag brake mechanism to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an airbag brake mechanism, including an auxiliary brake mechanism, the auxiliary brake mechanism including an upper fixed plate, a lower fixed plate, a brake plate, a brake connecting shaft, connecting bolts and a wheelchair structure, a plurality of groups of pillars are installed at the bottom of the upper fixed plate, a movable plate is provided on the outside of the pillars, and a locking bolt is provided on the top of each pillar; wherein, the upper fixed plate and the lower fixed plate are connected by the pillars and the locking bolts to form a fixed cage.

[0007] Preferably, the movable plate is located between the upper fixed plate and the lower fixed plate.

[0008] Preferably, an airbag is provided on the top of the movable plate, an air tube is provided on one side of the airbag, a manual inflatable bag is provided at one end of the air tube, an airbag valve is provided between the air tube and the manual inflatable bag, and a return spring is installed under the movable plate.

[0009] Preferably, the airbag is connected to the manually inflatable airbag via an air tube and an airbag valve.

[0010] Preferably, the trachea cabin is welded onto the movable plate to form an integral structure.

[0011] Preferably, a linear bearing is provided at the bottom of the lower fixing plate, and the brake connecting shaft and the brake plate are fixed to the tracheal cabin by connecting bolts passing through the linear bearing.

[0012] Preferably, the movable plate, the air tube cabin, the linear bearing, the brake plate, the anti-slip pad and the connecting bolts are connected to form a movable integral structure.

[0013] Preferably, an anti-skid pad is provided at the bottom of the brake plate to increase friction with the ground during braking.

[0014] Preferably, the wheelchair structure comprises a wheelchair frame and a seat connecting shaft, and a plurality of groups of rolling casters are provided at the bottom of the wheelchair frame.

[0015] Technical effects and advantages of the present invention:

[0016] 1. When in use, the present invention is equipped with an auxiliary braking mechanism, which innovatively adopts a manual inflatable bag designed in accordance with ergonomic principles. Users can easily brake and release the tables and chairs by simply squeezing and releasing them manually. The user of the auxiliary braking mechanism of the present invention does not need to bend over to operate, but can simply perform simple hand movements naturally next to the table and chair. This design greatly simplifies the operating process and saves operating time and physical effort. At the same time, this convenient operation method greatly improves the user's operating convenience and comfort. Whether it is a strong young person or a weak elderly person or child, they can easily control it, which fully reflects the highly humanized design concept and makes the use of tables and chairs more in line with people's needs.

[0017] 2. When in use, the auxiliary braking mechanism designed in the present invention adopts a purely mechanical structure, does not rely on electrical components for auxiliary control, does not require additional energy supply, and has a streamlined structure. This design avoids the risk of brake failure caused by problems such as electrical failure and insufficient battery power. It has stable and reliable performance and can work normally in various environments, ensuring that tables and chairs are firmly fixed in place when they do not need to be moved, thereby safeguarding the safety and convenience of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic structural diagram of a wheelchair of the present invention.

[0020] Figure 3 Schematic diagram of the auxiliary braking mechanism of the present invention Figure 1 .

[0021] Figure 4 Schematic diagram of the auxiliary braking mechanism of the present invention Figure 2 .

[0022] Figure 5 Schematic diagram of the ventilation system of the present invention.

[0023] Figure 6 It is a cross-sectional view of the reset position of the present invention.

[0024] Figure 7 It is a cross-sectional view of the braking position of the present invention.

[0025] The accompanying drawings are marked as follows: 100, auxiliary braking mechanism; 101, upper fixed plate; 102, movable plate; 103, lower fixed plate; 104, brake plate; 105, anti-slip pad; 106, pillar; 107, locking bolt; 108, airbag; 109, trachea; 110, manual inflatable bag; 111, airbag valve; 112, trachea cabin; 113, brake connecting shaft; 114, linear bearing; 115, return spring; 116, connecting bolt; 200, wheelchair structure; 201, wheelchair frame; 202, seat connecting shaft; 203, rolling casters. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] As attached Figure 1-7 The airbag brake mechanism shown includes an auxiliary brake mechanism 100, which includes an upper fixing plate 101, a lower fixing plate 103, a brake plate 104, a brake connecting shaft 113, connecting bolts 116, and a wheelchair structure 200. Several groups of pillars 106 are mounted on the bottom of the upper fixing plate 101. A movable plate 102 is sleeved around the outer surface of the pillars 106. A locking bolt 107 is provided on the top of each pillar 106. The upper fixing plate 101 and the lower fixing plate 103 are connected by the pillars 106 and the locking bolts 107 to form a fixed cage.

[0028] The movable plate 102 is located between the upper fixed plate 101 and the lower fixed plate 103. An airbag 108 is provided on the upper surface of the movable plate 102. An air tube 109 is provided on one side of the airbag 108. A manual airbag 110 is provided at one end of the air tube 109. An airbag valve 111 is provided between the air tube 109 and the manual airbag 110. A return spring 115 is installed under the movable plate 102. The airbag 108 is connected to the manual airbag 110 through the air tube 109 and the airbag valve 111. An airtube cabin 112 is welded on the movable plate 102. , and form an integral structure. A linear bearing 114 is provided at the bottom of the lower fixed plate 103. The brake connecting shaft 113 and the brake plate 104 are fixed to the tracheal cabin 112 through the linear bearing 114 by connecting bolts 116. The movable plate 102, the tracheal cabin 112, the linear bearing 114, the brake plate 104, the anti-slip pad 105, and the connecting bolts 116 are connected to form a movable integral structure. The bottom of the brake plate 104 is provided with an anti-slip pad 105 to increase the friction with the ground during braking;

[0029] The wheelchair structure 200 includes a wheelchair frame 201 and a seat connecting shaft 202. The bottom of the wheelchair frame 201 is provided with a plurality of rolling casters 203.

[0030] The auxiliary brake mechanism 100 is mounted on a commercially available wheelchair structure 200. The airbag 108 is then manually controlled to control the contact between the auxiliary brake mechanism 100 and the ground, thereby controlling the fixation or freedom of the wheelchair. The wheelchair structure 200 is not within the scope of this patent and is provided for convenience in describing the auxiliary brake mechanism 100 of this patent.

[0031] The auxiliary brake mechanism 100 is composed of multiple components. The upper fixed plate 101 and the lower fixed plate 103 are connected by pillars 106 and locking bolts 107 to form a fixed cage, which provides a stable support frame for the entire mechanism. The movable plate 102 is mounted on the pillars 106 between the upper fixed plate 101 and the lower fixed plate 103 and can move up and down along the pillars 106. The airbag 108 is installed on the upper side of the movable plate 102, and the return spring 115 is installed on the lower side of the movable plate 102. The two provide the power for the up and down movement respectively. and reset force; the tracheal cabin 112 is welded to the movable plate 102, the linear bearing 114 is embedded in the lower fixed plate 103, the brake connecting shaft 113 and the brake plate 104 are fixed to the tracheal cabin 112 through the connecting bolt 116 passing through the linear bearing 114; the anti-slip pad 105 is fixed to the bottom of the brake plate 104, which is used to increase the friction with the ground during braking and increase the braking effect. The manual inflatable bag 110 is connected to the airbag 108 through the air pipe 109 and the airbag valve 111, which is used to inflate or deflate the airbag 108;

[0032] After the manual inflatable airbag 110 ventilates the airbag 108 through the airbag valve 111 and the air tube 109, the airbag 108 pushes the movable plate 102 downward. Since the movable plate 102, the air tube cabin 112, the linear bearing 114, the brake plate 104, and the anti-skid pad 105 connecting bolts 116 form an integral structure, the anti-skid pad 105 moves downward and presses against the ground to generate horizontal friction to achieve a braking effect. Conversely, when the airbag valve 111 is opened, the return spring 115 pushes the movable plate 102 upward, thereby driving the anti-skid pad 105 to move online and fall off the ground, and the friction disappears.

[0033] The manual inflatable bag 110 is ergonomically designed, requiring minimal force to squeeze, making it easy even for users with limited strength. Furthermore, the wheelchair can be braked and released with a simple squeeze and release action, eliminating the need for complex operating steps. This is quick and convenient, enhancing the user's operational experience. The anti-slip pad 105 is made of a special material with a high coefficient of friction. During braking, the anti-slip pad 105 adheres closely to the ground, generating sufficient horizontal friction to effectively prevent the wheelchair from rolling. Even on relatively smooth surfaces, it provides reliable braking performance, significantly improving wheelchair safety and reducing the risk of collisions, falls, and other accidents caused by unexpected wheelchair movement. This device avoids the risk of brake failure due to electrical failures, low batteries, and other issues. Its stable and reliable performance ensures normal operation in a variety of environments, ensuring that tables and chairs remain firmly in place when not in need of movement, safeguarding the user's safety and convenience.

[0034] The working principle of the present invention is as follows: when the wheelchair needs to be braked, the manual inflatable bag 110 is manually squeezed, and the gas is ventilated to the airbag 108 through the airbag valve 111 and the air tube 109. As the gas is continuously filled, the airbag 108 gradually expands, generating a downward thrust on the upper movable plate 102. Since the movable plate 102 is sleeved on the support 106, under the action of the airbag thrust, the movable plate 102 moves downward along the support 106; because the movable plate 102, the airtube cabin 112, the linear bearing 114, the brake plate 104, the anti-slip pad 105, and the connecting bolt 116 form an integral structure, when the movable plate 102 moves downward, it will drive the entire movable structure to move downward together. Finally, the anti-slip pad 105 moves downward and presses against the ground, generating horizontal friction between the ground and the ground. This friction will hinder the rolling of the wheelchair, thereby achieving the braking effect of the wheelchair and fixing the wheelchair in the current position.

[0035] On the contrary, when the brakes need to be released to restore the wheelchair to free movement, the airbag valve 111 is opened. At this time, the gas in the airbag 108 is discharged through the air pipe 109 and the airbag valve 111, and the airbag 108 gradually contracts, reducing the downward thrust on the movable plate 102; at the same time, the return spring 115 installed under the movable plate 102 begins to play a role. Since the return spring 115 was compressed before, it will now generate an upward elastic force, pushing the movable plate 102 to move upward. As the movable plate 102 moves upward, the entire movable structure connected to it also moves upward, and the anti-slip pad 105 is separated from the ground. After the anti-slip pad 105 is separated from the ground, the friction between the two disappears, and the wheelchair is no longer restricted by the braking force and can move freely. Through the above-mentioned manual control of the inflation and deflation of the airbag 108, the purpose of controlling the wheelchair to be fixed or freely moved is achieved.

[0036] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0038] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An airbag brake mechanism, characterized in that: The invention comprises an auxiliary braking mechanism (100), wherein the auxiliary braking mechanism (100) comprises an upper fixing plate (101), a lower fixing plate (103), a braking plate (104), a braking connecting shaft (113), a connecting bolt (116) and a wheelchair structure (200), wherein a plurality of groups of pillars (106) are installed at the bottom of the upper fixing plate (101), a movable plate (102) is provided on the outside of the pillars (106), and a locking bolt (107) is provided on the top of each pillar (106); wherein the upper fixing plate (101) and the lower fixing plate (103) are connected by the pillars (106) and the locking bolts (107) to form a fixed cage.

2. The airbag brake mechanism according to claim 1, characterized in that: The movable plate (102) is located between the upper fixed plate (101) and the lower fixed plate (103).

3. The airbag brake mechanism according to claim 1, characterized in that: An airbag (108) is provided on the top of the movable plate (102), an air tube (109) is provided on one side of the airbag (108), a manual inflation bag (110) is provided at one end of the air tube (109), an airbag valve (111) is provided between the air tube (109) and the manual inflation bag (110), and a return spring (115) is installed under the movable plate (102).

4. The airbag brake mechanism according to claim 3, characterized in that: The air bag (108) is connected to a manual inflatable air bag (110) via an air tube (109) and an air bag valve (111).

5. The airbag brake mechanism according to claim 1, characterized in that: The trachea cabin (112) is welded to the movable plate (102) to form an integral structure.

6. The airbag brake mechanism according to claim 1, characterized in that: A linear bearing (114) is provided at the bottom of the lower fixing plate (103), and the brake connecting shaft (113) and the brake plate (104) are fixed to the tracheal cabin (112) via connecting bolts (116) passing through the linear bearing (114).

7. The airbag brake mechanism according to claim 6, characterized in that: The movable plate (102), the air tube cabin (112), the linear bearing (114), the brake plate (104), the anti-slip pad (105) and the connecting bolts (116) are combined into a movable integral structure through the connection of various components.

8. The airbag brake mechanism according to claim 1, characterized in that: The bottom of the brake plate (104) is provided with an anti-skid pad (105) for increasing friction with the ground during braking.

9. The airbag brake mechanism according to claim 1, characterized in that: The wheelchair structure (200) comprises a wheelchair frame (201) and a seat connecting shaft (202), and a plurality of rolling casters (203) are provided at the bottom of the wheelchair frame (201).

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